., Ikramuddin, Muhammad Adam, Hizir Sofyan, and Faisal . “Determination of Brand Loyalty in Telecommunication Industry: A Literatur Review”. International Journal of Engineering & Technology 7, no. 3.30 (August 24, 2018): 59–62. Accessed May 2, 2024. https://sciencepubco.com/index.php/ijet/article/view/18155.